A. Method returns true if all characters in the string are alphanumeric numbers(either alphabets numbers). If not,it returns false
B. Method returns False if all characters in the string are alphanumeric numbers(either alphabets numbers). If not,it returns True
C. Both of the above
D. None of these

Solution

A. Method returns true if all characters in the string are alphanumeric numbers(either alphabets numbers). If not,it returns false